Telephone set base



FIG. 1 is a left front and top perspective view of a telephone set base showing my new design;

FIG. 2 is a top plan view;

FIG. 3 is a front elevational view;

FIG. 4 is a rear elevational view;

FIG. 5 is a bottom plan view;

FIG. 6 is one side elevational view; and

FIG. 7 is an elevational view of the other side thereof. 

The ornamental design for a telephone set base, substantially as shown and described. 